:root {
    --bg-dark: #0f0f12;
    --sidebar-bg: #16161d;
    --accent: #9d6dff;
    --accent-glow: rgba(157, 109, 255, 0.3);
    --text-main: #e0e0e0;
    --text-bright: #ffffff;
    --text-dim: #909090;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-family: 'Outfit', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-family);
    overflow: hidden;
    height: 100vh;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Styling */
.sidebar {
    width: 20%;
    min-width: 250px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    z-index: 10;
    box-shadow: 10px 0 30px rgba(0,0,0,0.5);
}

/* New Thin Logo Styling */
.thin-logo {
    padding: 1rem 1rem 0.25rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0;
}

/* Tabs */
.folder-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0 1rem 0.5rem;
}

.tab-btn {
    flex: 1 1 45%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-dim);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.2s;
}

.tab-btn:hover {
    background: rgba(255,255,255,0.1);
}

.tab-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Controls */
.camera-controls.thin-controls {
    padding: 0 1rem 0.5rem;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 0.5rem;
}

.thin-controls h3 {
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.control-group {
    margin-bottom: 0.4rem;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    margin-bottom: 0.2rem;
    color: var(--text-dim);
}

.control-group span {
    color: var(--text-bright);
    font-family: monospace;
}

/* Dropdown */
.anim-dropdown {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-bright);
    padding: 0.5rem;
    border-radius: 6px;
    font-size: 0.8rem;
    outline: none;
    cursor: pointer;
    margin-top: 0.25rem;
    transition: all 0.2s ease;
}

.anim-dropdown:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
}

.anim-dropdown option {
    background: #1a1a1a;
    color: var(--text-bright);
}

.anim-dropdown optgroup {
    background: #1a1a1a;
    color: var(--accent);
    font-style: normal;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Search */
.search-box.thin-search {
    padding: 0 1rem 0.5rem;
}

.search-box input {
    width: 100%;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 0.6rem 0.8rem;
    color: white;
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
}

.search-box input:focus {
    border-color: var(--accent);
}

/* List */
.spine-list {
    flex: 1;
    overflow-y: auto;
    list-style: none;
    padding: 0 1rem 2rem;
}

.spine-list::-webkit-scrollbar {
    width: 4px;
}

.spine-list::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 10px;
}

.char-group-header {
    padding: 0.35rem 0.8rem 0.2rem;
    margin-top: 0.6rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    list-style: none;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 0.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.char-header-top {
    display: flex;
    align-items: baseline;
    gap: 0.3em;
}

.hull-badge {
    display: inline-block;
    padding: 0.05em 0.35em 0.1em;
    border-radius: 3px;
    font-size: 0.55rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: #fff;
    line-height: 1.5;
    vertical-align: middle;
    text-shadow: 0 1px 1px rgba(0,0,0,0.35);
}

/* Blue — Destroyer */
.hull-DD,
.hull-DDG  { background: #4875CC; }

/* Yellow/gold — Cruisers: CL, CA, CLT, CAV, BM */
.hull-CL,
.hull-CA,
.hull-CLT,
.hull-CAV,
.hull-BM   { background: #C89020; }

/* Orange — Large Cruiser */
.hull-CB   { background: #C87820; }

/* Red — Battleship types: BB, BC, BBV */
.hull-BB,
.hull-BC,
.hull-BBV  { background: #C83838; }

/* Purple — Carriers: CV, CVL */
.hull-CV,
.hull-CVL  { background: #7038B0; }

/* Teal — Repair & Munition: AR, AE */
.hull-AR,
.hull-AE   { background: #1AA098; }

/* Green — Submarine: SS, SSV */
.hull-SS,
.hull-SSV  { background: #38A840; }

/* Brown — Sailing Frigates */
.hull-FF   { background: #8B6240; }

.char-header-stars {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    line-height: 1;
}

.stars-normal  { color: #d1d5db; }
.stars-common  { color: #d1d5db; }
.stars-rare    { color: #60a5fa; }
.stars-elite   { color: #c084fc; }
.stars-sr      { color: #fbbf24; }
.stars-ur {
    background: linear-gradient(90deg, #f87171, #fb923c, #facc15, #4ade80, #60a5fa, #c084fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.spine-item {
    padding: 0.6rem 0.8rem;
    margin-bottom: 0.4rem;
    background: var(--glass);
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.spine-item.grouped {
    margin-left: 0.5rem;
}

.spine-item .char-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    opacity: 0.9;
}

.spine-item .char-text {
    flex: 1;
    min-width: 0;
}

.spine-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(3px);
}

.spine-item.active {
    background: var(--accent-glow);
    border-color: var(--accent);
}

.spine-item .name {
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.spine-item .subname {
    font-size: 0.7rem;
    opacity: 0.45;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 0.1rem;
}

.badge {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    padding: 1px 4px;
    border-radius: 3px;
    margin-left: 4px;
    vertical-align: middle;
    line-height: 1.4;
}

.badge-nobg {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.badge-cn {
    background: rgba(255, 180, 50, 0.15);
    color: rgba(255, 180, 50, 0.85);
    border: 1px solid rgba(255, 180, 50, 0.3);
}

.badge-shadow {
    background: rgba(120, 120, 120, 0.15);
    color: rgba(160, 160, 160, 0.8);
    border: 1px solid rgba(120, 120, 120, 0.25);
}

.badge-animated {
    background: rgba(99, 202, 255, 0.15);
    color: rgba(99, 202, 255, 0.9);
    border: 1px solid rgba(99, 202, 255, 0.3);
}

.badge-wedding {
    background: rgba(254, 1, 154, 0.12);
    color: #fe019a;
    border: 1px solid rgba(254, 1, 154, 0.3);
}

.badge-bg {
    background: rgba(74, 222, 128, 0.15);
    color: rgba(74, 222, 128, 0.9);
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.wedding-name {
    color: #fe019a;
}

.collab-hololive { color: #4db8ff; }
.collab-doa      { color: #ff6b6b; }
.collab-tolove   { color: #ffb3c6; }
.collab-ryza     { color: #e8a838; }
.collab-danmachi   { color: #a78bfa; }
.collab-idolmaster { color: #60a5fa; }
.collab-datealive  { color: #e879f9; }
.collab-brs          { color: #22d3ee; }
.collab-atelieryumia  { color: #fb923c; }
.collab-senrankagura  { color: #fb7185; }
.collab-kizunaai      { color: #f472b6; }
.collab-neptunia      { color: #c084fc; }
.collab-gridman       { color: #34d399; }
.collab-utaware       { color: #fde047; }
.collab-bilibili      { color: #fb7299; }

/* Viewer Styling */
.viewer-container {
    flex: 1;
    position: relative;
    background: radial-gradient(circle at center, #1a1a25 0%, #0f0f12 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#viewer-btns {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 10;
    display: flex;
    gap: 0.4rem;
}

#viewer-btns button {
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.7);
    padding: 0.45rem 0.55rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    line-height: 0;
}

#viewer-btns button:hover {
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.35);
}

#viewer-btns button:active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

#tracking-btn img {
    opacity: 0.7;
    transition: opacity 0.2s;
}

#tracking-btn:hover img {
    opacity: 1;
}

#tracking-btn.tracking-off img {
    opacity: 0.3;
}

#tracking-btn.tracking-off {
    border-color: rgba(255, 255, 255, 0.08);
}

#viewer-bg {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    display: none;
    pointer-events: none;
    image-rendering: auto;
    max-width: 100%;
    max-height: 100%;
}

#player-container {
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
}

.bg-search {
    width: 100%;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 0.35rem 0.6rem;
    color: var(--text-bright);
    font-size: 0.75rem;
    font-family: inherit;
    outline: none;
    margin-bottom: 0.25rem;
    transition: border-color 0.2s ease;
}

.bg-search:focus {
    border-color: var(--accent);
}

.no-selection {
    text-align: center;
    opacity: 0.3;
}

.no-selection .icon {
    font-size: 4rem;
    filter: drop-shadow(0 0 20px var(--accent));
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-dim);
    font-style: italic;
    font-size: 0.9rem;
}

input[type=range] {
    width: 100%;
    accent-color: var(--accent);
    cursor: pointer;
}